The Principle Of Attic Ventilation

It helps prevent moisture from becoming trapped in insulation structural wood shingles and roof deck.

The principle of attic ventilation.

In the winter warm moist air seeps into the attic from the living space below. In the summer good attic ventilation reduces heat buildup. Of attic space you need 1 sq. It promotes a cool dry attic.

There is a generally agreed upon formula that you can apply for balanced attic ventilation known as the 1 150 rule. In cold climates the primary purpose of attic or roof ventilation is to maintain a cold roof temperature to control ice dams created by melting snow and to vent moisture that moves from the conditioned space to the attic ventilation acts to bypass the vapour barrier created by most roof membranes. Proper attic ventilation offers all these benefits. An effective attic ventilation system provides year round benefits.

During colder months ventilation reduces moisture to help keep attics dry. It helps minimize the impact of ice damming. With that in mind here are three important principles to ensure proper attic ventilation. 3 principles of proper attic ventilation.

During colder months ventilation reduces moisture to help keep attics dry. Removes heat from the attic. Several purposes of an attic ventilation system are to provide added comfort to help protect against damage. It states that for every 150 sq.

That cuts cooling costs and prolongs shingle life. Intake vents located at the lowest part of the roof under the eaves allow cool. It also helps prevent ice dams. If you understand the principles of attic ventilation you know an effective venting system provides year round benefits.

There is a formula for calculating your ventilation needs. It allows outside air to flow naturally upward and out of attic. Take the total square footage of your attic and divide it by 150. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Calculate your ventilation needs. Thus you first have to calculate the square footage of the attic if you don t already know it and to do it you need to measure three values the length width and height of the space. By removing the hot air from the attic the home is able to stay cooler and the air conditioner runs less frequently. Attics are ventilated by strategically placed roof vents which allow outdoor air to come in and let indoor air escape.

Good ventilation allows the heat and moisture to escape. Attics need to breathe in all climates. It also helps prevent ice dams. During warmer months ventilation helps keep attics cool.

Proper attic ventilation will help increase home comfort help ensure the life and performance of roofing materials and may reduce utility bills.